解方程2x260x^2-3=0x^2=3x=±√32x2+x-6=0(2x-3)(x+2)=0x=3/2或x=-22,解方程2x27x60配方法解:2x2-7x+6=0x2-7x/2=-3(x-7/4)2=-3+49/16(x-7/4)2=1/16解得x1=2,X2=3/2纯手动,累呀3,方程X25X60的解集(x-2)*(x-3)=0所以x-2=0或x-3=0x=2或3x2-5x+6=0,(-2)(x-3)=0,x=2,x=3.4,x26x60怎么解x2-6X+9-15=0(X-3)2=15X=√1